Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cua duoc do snippets" » "cua duoc code snippets", "chua duoc do snippets", "cua nuoc do snippets", "cua quoc do snippets", "cua duoc dao snippets", "cua duoc co snippets", "cua duoc vo snippets"
"python using java snippets" » "python using data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cua duoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua duoc do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cua duoc do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua duoc do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.